Between 15M and 17M, around 16M. I’d say because of the shortages and XBox competition there’s a slightly bigger chance it’ll fall at the lower end of that window so I’ll vote for the 14-15.9M option.
Bonus: Nothing really, I don’t see myself getting a next-gen system anytime soon. If ever, which would be the first time since, ever, that I only had the Nintendo system in a gen (Switch in this case).